Plasmonic Metasurface for Directional and Frequency-Selective Thermal Emission

D Costantini (1) , Antoine Lefebvre (2) , A.-L Coutrot (1) , I Moldovan-Doyen (1) , J.-P Hugonin (1) , S Boutami (2) , F Marquier (1) , H. Benisty (1) , J.-J Greffet (1)

1 Laboratoire Charles Fabry / Naphel
2 CEA-LETI - Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information

Incandescent filaments and membranes are often used as infrared sources despite their low efficiency, broad angular emission, and lack of spectral selectivity. Here, we introduce a metasurface to control simultaneously the spectrum and the directivity of blackbody radiation. The plasmonic metasurface operates reliably at 600 °C with an emissivity higher than 0.85 in a narrow frequency band and in a narrow solid angle. This emitter paves the way for the development of compact, efficient, and cheap IR sources and gas detection systems.

Domains: Physics [physics]; Physics [physics]; Optics [physics.optics]

D Costantini, Antoine Lefebvre, A.-L Coutrot, I Moldovan-Doyen, J.-P Hugonin, et al.. Plasmonic Metasurface for Directional and Frequency-Selective Thermal Emission. Physical Review Applied, 2015, 4 (1), pp.014023. ⟨10.1103/PhysRevApplied.4.014023⟩. ⟨hal-01335152⟩